GIF_1x1 in www.facebook.com

On 2020-06-30T03:31:19.812077+00:00 we found pattern GIF_1x1, type: User tracking and fingerprinting, (1x1 transparent GIF is frequently used as user tracking mechanism) in the page https://www.facebook.com/tr/?id=1602570… referenced from http://lafrancelaw.com/ .

Code sample:

b'GIF8' … b'\x01\x00\x01\x00'

This feature is experimental so please feel free to contact us if you feel any of the reported issues is a false positive or you want to suggest a pattern that should be detected (we are using Yara standard).